This isn't normal. A circuit breaker should be used to break the load first. The disconnector is only opened once current flow is proven to be broken.
@kymbolino Hi. I have opend 132kV switches when the main circut breaker (10 meters away) have been confirmed open. The reason for the arc is coming from the voltage difference. When the gap between the "live" end and the "disconnected" end is not far enougf from eachother, then the isolation capabilities of the air is not high enougf... When the distance is long enougf the ark is not powerful enougf to sustain itself and burns out. Sorry for my bad english... I do this every day...
@Roffeman1 As you do this everyday, I believe that you really do see this happen.
However I think you're reasoning is incorrect. Typically we see arcs occur from phase to ground, but the downstream side of the disconnector (the side we wish to 'isolate' and at the moment it is opened) is not grounded! That's why there is an earth switch we later close.
The isolated section should have nowhere for arc current to flow to, except it's own capacitance which would be very small (10m you say).
The arc you see occuring overhead is between two conductors supported by insulator stacks. This is normal and no big deal to the substation switchman. All is good.
This isn't normal. A circuit breaker should be used to break the load first. The disconnector is only opened once current flow is proven to be broken.
kymbolino 4 months ago
@kymbolino Hi. I have opend 132kV switches when the main circut breaker (10 meters away) have been confirmed open. The reason for the arc is coming from the voltage difference. When the gap between the "live" end and the "disconnected" end is not far enougf from eachother, then the isolation capabilities of the air is not high enougf... When the distance is long enougf the ark is not powerful enougf to sustain itself and burns out. Sorry for my bad english... I do this every day...
Roffeman1 1 month ago
@Roffeman1 As you do this everyday, I believe that you really do see this happen.
However I think you're reasoning is incorrect. Typically we see arcs occur from phase to ground, but the downstream side of the disconnector (the side we wish to 'isolate' and at the moment it is opened) is not grounded! That's why there is an earth switch we later close.
The isolated section should have nowhere for arc current to flow to, except it's own capacitance which would be very small (10m you say).
kymbolino 1 month ago
cool
lokeycmos 8 months ago
aw, tiny arc. you should check out a 500kV switch opening.
tonymagona334 8 months ago
helllll
muscle423 1 year ago
is it suppose to do that??
DavidRockin1 1 year ago
the reason why its not a really big spark is because it takes 10,000 volts of electricity to spark 1 inch in air,. air in an insulator
hootergirlsrhot 1 year ago
@hootergirlsrhot
The arc you see occuring overhead is between two conductors supported by insulator stacks. This is normal and no big deal to the substation switchman. All is good.
Loco4Locomotives 1 year ago
how did that worker, not get a shock since he was standing right next to the stuff that did the arc?
letseeitplease 2 years ago
The resistance of the air between him and the live line is to great for an arc to form. If the voltages were higher that would however be the case.
csmaster65 2 years ago
e ainda fica um otario la em baixo
jorgefbatista 2 years ago
sounds a bit like someone blowing a raspberry.
BigSteve02 2 years ago 3
ZZZZOTTTT... :-)
Elhombresombra 2 years ago
Good thing he's wearing that hardhat.
rsp196607 3 years ago
That must look pretty spectacular at night!
Peedlebum 3 years ago 8
buuuuzzzzz.
form109 3 years ago 2
wooooo!69!!!!
lol
TCDIL95 3 years ago
That went well, search 'vacrupter' for when it doesn't!
FBRK8R 3 years ago 11